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• Determining relative velocities on impact?

  - by meds

  I'm trying to figure out a way to determine the relative velocity of a body colliding with another in a 2D environment. For example if one body is moving at (1,0) and another traveling behind it collides with it from behind at (2,0) the velocity of the impact relative to the first body was (1,0). I need a method which takes in two velocities, one velocity belonging to the body the velocity is being measured against, and the other for the impacting body and return the relative velocity.

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• 2D mouse coordinates from 3d object projection

  - by user17753

  Not entirely certain of the nomenclature here -- basically, after placing a model in world coordinates and setting up a 3D camera to look at it the model has been projected onto the screen in a 2D fashion. What I'd like to do is determine if the mouse is inside the projected view of the model. Is there a way to "unproject" in the XNA framework? Or what is this process called as, so that I can better search for it?

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• OpenGL Lighting

  - by gopgop

  I have a simple day and night cycle by at day disabling OpenGL lighting and at night enabling openGL Lighting. When I enable everything appears darker. My question is How would I make it that at a specific spot there would be a light that will only light up its surrounding area for example: http://media.giantbomb.com/uploads/0/276/1414275-light_large.png Where the light is is where I want to position my light. My application is in 2D.

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• Présentation des projets de la rubrique 2D / 3D / Jeux : huit jeux ont attiré notre attention

  Bonjour, La rubrique 2D / 3D / Jeux accueille de nombreux projets de création de jeux vidéo. Nous avons souhaité mettre en avant quelques uns d'entre eux et ce n'est pas pas moins de huit projets que nous présentons aujourd'hui. Il y en a pour tous les goûts : parmi eux, nous pouvons compter un remake évolué de Bomberman, un puzzle game, un jeu de stratégie, ... Nous vous souhaitons une bonne lecture....

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• Best game engine 2D for iOS

  - by Adelino

  which is the best 2D game enginefor iOS? I really need a game engine that allows me to modify the game code because I need to control the multi-touch events. I have a framework that detects the gesture that the player makes and I need to test this gesture recognizer in a game, so I have to have the freedom to change the game code. I don't want anything like GameSalad where you can't control anything. Thanks in advance.

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• How to calculate continuous motion with angular velocity in 2d

  - by Rulk

  I'm really new with physics. Maybe someone would be able to help me to solve the next problem: I need to calculate position of an agent on the plane(2D) in next time step where time step is large(20+ seconds) What I know about agent's motion: Initial Position Direction(normalised vector) Velocity(linear function from time ) - object always moves along it's direction Angular Velocity(linear function from time) Optional: External force direction External force (linear function from time) Running discreet simulation with t-0 is not an option.

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• Fusion-Icon does not show up in system tray

  - by Schubibuntu

  I can't find a solution for my problem online: I'm running Unity 2D in Ubuntu 11.10 and want to enable compiz effects. I installed compiz config settings manager, and Fusion-Icon, but when I start Fusion-Icon nothing happens. When I execute it from terminal it stucks at lines like "setting update 'command'" or "setting update 'next_key'" I already set the whitelist for the panel to 'all'. Anyone knows what I'm missing? Thanks in advance!

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• Techniques for lighting a texture (no shadows)

  - by Paul Manta

  I'm trying to learn about dynamic shadows for 2D graphics. While I understand the basic ideas behind determining what areas should be lit and which should be in shadow, I don't know how I would "lighten" a texture in the first place. Could you go over various popular techniques for lighting a texture and what (dis)advantages each one has? Also, how is lighting a texture with colored light different from using white light?

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• ubuntu switched back to ubuntu-2d in 12.04

  - by ved2254

  This problem may have been reported earlier but I was unable to find a solution to this. after trying to install Nvidia drivers my Ubuntu session changed to ubuntu-2d and I am unable to restore it to Ubuntu 3d. Which drivers I may need to install/remove to solve this problem? For further reference, heres a pic of how my workspace switcher looks like when changing workspaces. I would like it to be as it was when Ubuntu was first installed.

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• How can I plot a radius of all reachable points with pathfinding for a Mob (XNA)?

  - by PugWrath

  I am designing a tactical turn based game. The maps are 2d, but do have varying level-layers and blocking objects/terrain. I'm looking for an algorithm for pathfinding which will allow me to show an opaque shape representing all of the possible max-distance pixels that a mob can move to, knowing the mob's max pixel distance. Any thoughts on this, or do I just need to write a good pathfinding algorithm and use it to find the cutoff points for any direction in which an obstacle exists?

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• Team seeks collaboration for 2D action adventure RPG

  - by AlchemicTempest

  not entirely sure if it's appropriate to post this here, but I'll try: We are looking for all kinds of game dev interested people for our 2D sci-fi action adventure rpg "Quantum Nucleus" This is voluntary collaboration. We are seeking programmers(Java), artists, designers, audio people and writers So basically all kinds of people. Please watch our video, for further information: Video Link Thanks ! :D http://www.Alchemic-Tempest.com

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• Java - 2d Array Tile Map Collision

  - by Corey

  How would I go about making certain tiles in my array collide with my player? Like say I want every number 2 in the array to collide. I am reading my array from a txt file if that matters and I am using the slick2d library. Here is my code if needed. public class Tiles { Image[] tiles = new Image[3]; int[][] map = new int[500][500]; Image grass, dirt, mound; SpriteSheet tileSheet; int tileWidth = 32; int tileHeight = 32; public void init() throws IOException, SlickException { tileSheet = new SpriteSheet("assets/tiles.png", tileWidth, tileHeight); grass = tileSheet.getSprite(0, 0); dirt = tileSheet.getSprite(7, 7); mound = tileSheet.getSprite(2, 6); tiles[0] = grass; tiles[1] = dirt; tiles[2] = mound; int x=0, y=0; BufferedReader in = new BufferedReader(new FileReader("assets/map.txt")); String line; while ((line = in.readLine()) != null) { String[] values = line.split(","); for (String str : values) { int str_int = Integer.parseInt(str); map[x][y]=str_int; //System.out.print(map[x][y] + " "); y=y+1; } //System.out.println(""); x=x+1; y = 0; } in.close(); } public void update() { } public void render(GameContainer gc) { for(int x = 0; x < 50; x++) { for(int y = 0; y < 50; y ++) { int textureIndex = map[y][x]; Image texture = tiles[textureIndex]; texture.draw(x*tileWidth,y*tileHeight); } } } } I tried something like this, but I it doesn't ever "collide". X and y are my player position. if (tiles.map[(int)x/32][(int)y/32] == 2) { System.out.println("Collided"); }

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• Rending 2D Tile World (With Player In The Middle)

  - by Mick

  What I have at the moment is a series of data structures I'm using, and I would like to render the world onto the screen (just the visible parts). I've actually already done this several times (lots of rewrites), but it's a bit buggy (rounding seems to make the screen jump ever so slightly every x tiles the player walks past). Basically I've been confusing myself heavily on what I feel should be a pretty simple problem... so here I am asking for some help! OK! So I have a 50x50 array holding the tiles of the world. I have the player position as 2 floats, x ([0, 49]) and y ([0, 49]) in that array. I have the application size exactly in pixels (x and y). I have an arbitrary TILE_SIZE static int (based on screen pixels). What I think is heavily confusing me is using a 2d orthogonal projection in opengl which maps (0,0) to the top left of the screen and (SCREEN_SIZE_X, SCREEN_SIZE_Y) to the bottom right of the screen. gl.glMatrixMode(GL.GL_PROJECTION); gl.glLoadIdentity(); glu.gluOrtho2D(0, getActualWidth(), getActualHeight(), 0); gl.glMatrixMode(GL.GL_MODELVIEW); gl.glLoadIdentity(); The map tiles are set so that the (0,0) in the array is the bottom left. And the player has to be in the middle on the screen (SCREEN_SIZE_X/2, SCREEN_SIZE_Y/2). What I've been doing so far is trying to render 1-2 tiles more all around what would be displayed on the screen so that I don't have to worry about figuring out rendering half a tile from the top left, depending where the player is. It seems like such an easy problem but after spending about 40+hours on it rewriting it many times I think I'm at a point where I just can't think clearly anymore... Any help would be appreciated. It would be great if someone can provide some very basic pseudo code on keeping the player in the middle when your projection is mapped to screen coordinates and only rendering basically the tiles that you would be any be see. Thanks!

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• JavaScript array to PHP array then process in PHP and return

  - by Constructor

  Example: javascript: var mycourses=new Array(); mycourses[0]="History"; mycourses[1]="Math"; mycourses[1][0]="Introduction to math"; mycourses[1][1]="Math 2"; mycourses[1][2]="Math 3"; PHP will then run these values through functions (please note values are mostly not strings as in the example above but rather numbers), the functions will return some text which will than be displayed in a form How should I go about doing this? p.s.: I found some similar stuff, but nothing quite like this... as far as I see I will have to use JSON (is there a way to code it from JS automatically - saw this for strings) and AJAX

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• Match an element of an array to a different element in that array

  - by Anh

  I have an array containing several students. I want them to cross-grade one another randomly, i.e. each student will grade someone and will be graded by someone else (these two people may or may not be the same person). Here is my working solution. I'm sure there is a more elegant answer! def randomize(student_array) graders = student_array.dup gradees = student_array.dup result = {} graders.each do |grader| gradee = grader while gradee == grader gradee = gradees.sample end result[grader] = gradee gradees.delete_at(gradees.index(gradee)) end return result end

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• Populate javascript array with PHP array of Variables

  - by user1704514

  The following code is used to populate a pie chart in javascript: <script type="text/javascript"> var agg = { label: 'Aggressive', pct: [60, 10, 6, 30, 14, 10] }, bal = { label: 'Balanced', pct: [24, 7, 2, 18, 13, 36] }, mod = { label: 'Moderate', pct: [12, 4, 2, 10, 11, 61] }, inc = { label: 'Income', pct: [ 0, 0, 0, 0, 0,100] }, </script> Instead of tm: [40, 60, 67, 30, 74, 50] as seen above, I would like to make each of 6 values a php variable. Like: tm: [$r1, $r2, $r3, $r4, $r5, $r6] . How do I do this? How do I do this with? A php array or json encode?

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• Java Object Array item to String Array

  - by user341264

  Say I have the following: Class myclass { public string stra ="", strb = "" myclass(String a, String b){stra=a;strb=b} } //then in the app I want to do: myclass myclassinst1 = new myclass("blah","xxxx"); myclass myclassinst2 = new myclass("blah2","yyyy"); myclass myclassinst3 = new myclass("blah3","zzzz"); list <myclass> mylist = new ArrayList<myclass>(); mylist.add(myclassinst1 ); mylist.add(myclassinst2 ); mylist.add(myclassinst3 ); //How would I then convert that to a String[] Array of all the stra elements without using a loop. //eg: String[] strarr_a = mylist.toarray(myclass.stra); String[] strarr_b = mylist.toarray(myclass.strb); //instead of having to do String[] strarr_a = new String[mylist.size()]; String[] strarr_b = new String[mylist.size()]; for (int i=0;i<mylist.size();i++) { strarr_a[i] = mylist.get(i).stra; strarr_b[i] = mylist.get(i).strb; }

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• Hacked website, code is encrypted in hex, unable to identify

  - by dhakad

  my web site hacked and i am getting code in index page, but i am unable to find that where is the code in my web site... %3c%68%74%6d%6c%3e%3c%68%65%61%64%3e%0d%0a%3c%6d%65%74%61%20%63%6f%6e%74%65%6e%74%3d%22%74%65%78%74%2f%68%74%6d%6c%3b%20%63%68%61%72%73%65%74%3d%75%74%66%2d%38%22%3e%0d%0a%3c%74%69%74%6c%65%3e%2e%2f%20%72%45%64%20%58%20%7c%20%33%78%70%31%72%33%20%43%79%62%65%72%20%41%72%6d%79%3c%2f%74%69%74%6c%65%3e%0d%0a%3c%6d%65%74%61%20%6e%61%6d%65%3d%22%61%75%74%68%6f%72%22%20%63%6f%6e%74%65%6e%74%3d%22%72%45%64%20%58%22%20%2f%3e%0d%0a%3c%6d%65%74%61%20%6e%61%6d%65%3d%22%6b%65%79%77%6f%72%64%73%22%20%63%6f%6e%74%65%6e%74%3d%22%72%45%64%20%58%2c%33%78%70%31%72%33%20%43%79%62%65%72%20%41%72%6d%79%2c%5a%6f%6e%65%2d%48%2c%42%61%6e%67%6c%61%64%65%73%68%69%20%48%61%63%6b%65%72%22%20%2f%3e%0d%0a%3c%6d%65%74%61%20%6e%61%6d%65%3d%22%64%65%73%63%72%69%70%74%69%6f%6e%22%20%63%6f%6e%74%65%6e%74%3d%22%5b%20%72%45%64%20%58%20%2e%2e%20%54%68%65%20%52%65%61%6c%20%4f%75%74%72%61%67%65%6f%75%73%20%5d%22%20%2f%3e%0d%0a%3c%6c%69%6e%6b%20%72%65%6c%3d%22%53%48%4f%52%54%43%55%54%20%49%43%4f%4e%22%20%68%72%65%66%3d%22%68%74%74%70%3a%2f%2f%75%73%2e%79%69%6d%67%2e%63%6f%6d%2f%69%2f%6d%65%73%67%2f%65%6d%6f%74%69%63%6f%6e%73%37%2f%36%31%2e%67%69%66%22%3e%0d%0a%3c%73%74%79%6c%65%20%74%79%70%65%3d%22%74%65%78%74%2f%63%73%73%22%3e%0d%0a%62%6f%64%79%20%7b%62%61%63%6b%67%72%6f%75%6e%64%2d%69%6d%61%67%65%3a%20%75%72%6c%28%68%74%74%70%3a%2f%2f%6d%65%64%69%61%2e%73%6f%6d%65%77%68%65%72%65%69%6e%62%6c%6f%67%2e%6e%65%74%2f%69%6d%61%67%65%73%2f%6f%6e%64%68%6f%6b%61%72%65%72%5f%72%61%6a%70%75%74%72%61%5f%31%33%33%38%32%35%30%34%33%31%5f%31%2d%62%67%2e%67%69%66%29%3b%0d%0a%62%61%63%6b%67%72%6f%75%6e%64%2d%63%6f%6c%6f%72%3a%20%62%6c%61%63%6b%3b%63%6f%6c%6f%72%3a%20%23%46%46%41%35%30%30%3b%66%6f%6e%74%2d%77%65%69%67%68%74%3a%20%62%6f%6c%64%3b%74%65%78%74%2d%61%6c%69%67%6e%3a%20%63%65%6e%74%65%72%3b%7d%0d%0a%69%6d%67%7b%6f%70%61%63%69%74%79%3a%30%2e%37%35%3b%20%66%69%6c%74%65%72%3a%61%6c%70%68%61%28%6f%70%61%63%69%74%79%3d%37%35%29%3b%7d%0d%0a%2e%72%65%64%78%20%7b%74%65%78%74%2d%73%68%61%64%6f%77%3a%20%30%20%30%20%36%70%78%20%72%65%64%2c%20%30%20%30%20%35%70%78%20%72%65%64%2c%20%30%20%30%20%35%70%78%20%72%65%64%3b%63%6f%6c%6f%72%3a%20%23%46%46%46%7d%0d%0a%3c%2f%73%74%79%6c%65%3e%0d%0a%3c%2f%68%65%61%64%3e%0d%0a%3c%62%6f%64%79%20%6f%6e%63%6f%6e%74%65%78%74%6d%65%6e%75%3d%22%72%65%74%75%72%6e%20%66%61%6c%73%65%22%20%6f%6e%6b%65%79%64%6f%77%6e%3d%22%72%65%74%75%72%6e%20%66%61%6c%73%65%22%20%6f%6e%6d%6f%75%73%65%64%6f%77%6e%3d%22%72%65%74%75%72%6e%20%66%61%6c%73%65%22%3e%0d%0a%3c%64%69%76%20%73%74%79%6c%65%3d%22%66%6f%6e%74%2d%66%61%6d%69%6c%79%3a%20%50%61%6c%61%74%69%6e%6f%20%4c%69%6e%6f%74%79%70%65%3b%66%6f%6e%74%2d%73%69%7a%65%3a%20%34%36%70%78%3b%22%20%63%6c%61%73%73%3d%22%72%65%64%78%22%3e%2e%3a%3a%20%72%45%64%20%58%20%57%61%73%20%48%65%72%65%20%3a%3a%2e%3c%2f%64%69%76%3e%3c%62%72%2f%3e%0d%0a%3c%69%6d%67%20%73%72%63%3d%22%68%74%74%70%3a%2f%2f%6d%65%64%69%61%2e%73%6f%6d%65%77%68%65%72%65%69%6e%62%6c%6f%67%2e%6e%65%74%2f%69%6d%61%67%65%73%2f%6f%6e%64%68%6f%6b%61%72%65%72%5f%72%61%6a%70%75%74%72%61%5f%31%33%35%33%35%35%32%36%35%31%5f%31%2d%72%65%64%2d%78%2e%6a%70%67%22%3e%3c%62%72%2f%3e%0d%0a%3c%64%69%76%20%73%74%79%6c%65%3d%22%66%6f%6e%74%2d%66%61%6d%69%6c%79%3a%20%42%6f%6f%6b%6d%61%6e%20%4f%6c%64%20%53%74%79%6c%65%3b%63%6f%6c%6f%72%3a%20%23%30%30%30%3b%66%6f%6e%74%2d%73%69%7a%65%3a%20%32%30%70%78%3b%6d%61%72%67%69%6e%3a%30%3b%74%65%78%74%2d%73%68%61%64%6f%77%3a%20%30%20%31%70%78%20%33%70%78%20%23%30%30%46%46%30%30%2c%20%2d%31%70%78%20%30%20%33%70%78%20%23%30%30%46%46%30%30%2c%20%30%20%2d%31%70%78%20%33%70%78%20%23%30%30%46%46%30%30%2c%20%31%70%78%20%30%20%33%70%78%20%23%30%30%46%46%30%30%3b%22%3e%50%72%6f%75%64%20%54%6f%20%62%65%20%61%20%42%61%6e%67%6c%61%64%65%73%68%69%20%48%61%63%6b%65%72%3c%2f%64%69%76%3e%3c%62%72%2f%3e%0d%0a%3c%64%69%76%20%73%74%79%6c%65%3d%22%66%6f%6e%74%2d%66%61%6d%69%6c%79%3a%20%42%65%72%6c%69%6e%20%53%61%6e%73%20%46%42%3b%63%6f%6c%6f%72%3a%20%23%31%35%31%42%35%34%3b%66%6f%6e%74%2d%73%69%7a%65%3a%20%32%30%70%78%3b%74%65%78%74%2d%73%68%61%64%6f%77%3a%20%30%20%30%20%33%70%78%20%23%30%30%46%46%30%30%2c%20%30%20%30%20%33%70%78%20%23%30%30%46%46%30%30%2c%20%30%20%30%20%33%70%78%20%23%66%66%66%2c%20%30%20%30%20%35%70%78%20%23%46%30%30%2c%20%30%20%30%20%35%70%78%20%23%66%66%32%64%39%35%3b%22%3e%44%65%61%72%20%41%44%4d%49%4e%3c%62%72%2f%3e%21%20%53%65%63%75%72%65%20%79%6f%75%72%20%53%49%54%45%20%21%3c%2f%64%69%76%3e%3c%62%72%2f%3e%0d%0a%3c%64%69%76%20%73%74%79%6c%65%3d%22%66%6f%6e%74%2d%73%69%7a%65%3a%20%31%38%70%78%3b%66%6f%6e%74%2d%66%61%6d%69%6c%79%3a%20%43%65%6e%74%75%72%79%20%47%6f%74%68%69%63%3b%63%6f%6c%6f%72%3a%20%23%30%30%30%3b%74%65%78%74%2d%73%68%61%64%6f%77%3a%20%30%20%30%20%33%70%78%20%6c%69%6d%65%2c%20%30%20%30%20%33%70%78%20%6c%69%6d%65%2c%20%30%20%30%20%35%70%78%20%23%66%66%32%64%39%35%2c%20%30%20%30%20%35%70%78%20%23%66%66%32%64%39%35%3b%22%3e%72%65%64%2d%78%40%68%61%63%6b%65%72%6d%61%69%6c%2e%63%6f%6d%3c%2f%64%69%76%3e%0d%0a%3c%62%72%2f%3e%3c%64%69%76%20%73%74%79%6c%65%3d%22%66%6f%6e%74%2d%73%69%7a%65%3a%20%32%30%70%78%3b%22%3e%2e%2e%3a%3a%7c%20%47%72%65%65%74%7a%20%7c%3a%3a%2e%2e%3c%2f%64%69%76%3e%0d%0a%3c%64%69%76%20%73%74%79%6c%65%3d%22%66%6f%6e%74%2d%66%61%6d%69%6c%79%3a%20%42%6f%6f%6b%20%41%6e%74%69%71%75%61%3b%63%6f%6c%6f%72%3a%20%67%72%65%79%3b%66%6f%6e%74%2d%73%69%7a%65%3a%20%32%30%70%78%3b%74%65%78%74%2d%73%68%61%64%6f%77%3a%20%72%65%64%20%31%70%78%20%2d%30%70%78%20%36%70%78%22%3e%2e%3a%3a%20%78%33%6f%2d%31%33%33%37%20%7c%20%47%61%62%62%79%20%7c%20%24%70%21%72%21%74%7e%24%33%33%6b%33%72%20%7c%20%46%72%45%61%4b%79%20%3a%3a%2e%3c%62%72%2f%3e%41%6c%6c%20%4d%65%6d%62%65%72%73%20%6f%66%20%33%78%70%31%72%33%20%43%79%62%65%72%20%41%72%6d%79%3c%2f%64%69%76%3e%3c%62%72%2f%3e%0d%0a%3c%65%6d%62%65%64%20%73%72%63%3d%22%68%74%74%70%3a%2f%2f%79%6f%75%74%75%62%65%2e%67%6f%6f%67%6c%65%61%70%69%73%2e%63%6f%6d%2f%76%2f%70%74%5a%31%77%6f%33%4a%73%50%63%26%61%75%74%6f%70%6c%61%79%3d%31%26%6c%6f%6f%70%3d%31%22%20%74%79%70%65%3d%22%61%70%70%6c%69%63%61%74%69%6f%6e%2f%78%2d%73%68%6f%63%6b%77%61%76%65%2d%66%6c%61%73%68%22%20%77%6d%6f%64%65%3d%22%74%72%61%6e%73%70%61%72%65%6e%74%22%20%77%69%64%74%68%3d%22%31%22%20%68%65%69%67%68%74%3d%22%31%22%3e%3c%2f%62%6f%64%79%3e%3c%2f%68%74%6d%6c%3e'

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• class array variable initialization error in java

  - by trinity

  Hello I am trying to write a java program that reads an input file consisting of URLs , extracts tokens from these , and accordingly insert into : class Tokens { String name ; int count ; } , where name is the name of every unique token , and count is the frequency of that token in the URLs file..I've written the following code : import java.io.*; import java.net.*; public class Main { static class Tokens { String name; int count; } public static void main(String[] args) { String url_str,host; String htokens[]; URL url; boolean found=false; Tokens t[]; int i,j,k; try { File f=new File("urlfile.txt"); FileReader fr=new FileReader(f); BufferedReader br=new BufferedReader(fr); while((url_str=br.readLine())!=null) { url=new URL(url_str); host=url.getHost(); htokens=host.split("\\.|\\-|\\_|\\~|[0-9]"); for(i=0;i<htokens.length;i++) { if(!htokens[i].isEmpty()) { for(j=0;j<t.length;j++) { if(htokens[i].equals(t[j].name)) { t[j].count++; found=true; } } if(!found) { k=t.length; t[k].name=htokens[i]; t[k].count=1; } } } System.out.println(t.length + "class tokens :"); for(i=0;i<t.length;i++) { System.out.println("name :"+t[i].name+" frequency :"+t[i].count); } } br.close(); fr.close(); } catch(Exception e) { System.out.println(e); } } } But when i run it , it says : variable t not initialized.. What should i do to set it right ?

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• ZSH: why error using array: "illegal character: ^M"?

  - by HH

  $ values=( 300 400 ) $ echo "scale=20; $values[1]-$values[2]" | bc (standard_in) 1: illegal character: ^M // Why does it not print -100? $ echo $values // no ^M sign found! 300 400

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• php array in url from json

  - by mcgrailm

  Here is what I want to do: I have some json like this var foo = { format:"json", type:"test", id:"26443" }; and I awant to put that in a url like this 'http://example.com/a:3:{s:6:"format";s:4:"json";s:4:"type";s:5:"test";s:2:"id";s:5:"26443";}' which I will then put into ajax call but everything I have tried results in error 501 BAD URI could someone tell me how to do this I've tried this function js_array_to_php_array(a) { var a_php = ""; var total = 3; for (var key in a){ total; a_php = a_php + "s:" + String(key).length + ":\"" + String(key) + "\";s:" + String(a[key]).length + ":\"" + String(a[key]) + "\";"; } a_php = "a:" + total +":{" + a_php + "}"; return a_php; } which I found out on the web but had to mod to get to run but still no luck

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• Java: Is there any short combination to convert array of primitive to List & receive "printable" ver

  - by blackliteon

  int[] arrc = new int[] {1, 2, 3}; System.out.println(new ArrayList(Arrays.asList(arrc))); prints address, but i desire to use toString as in ArrayList. Is it possible ?

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• F# Multidimensional Array Types

  - by SHiNKiROU

  What's the difference between 'a[,,] and 'a[][][]? They both represent 3-d arrays. It makes me write array3d.[x].[y].[z] instead of array3d.[x, y, z]. Why I can't do the following? > let array2d : int[,] = Array2D.zeroCreate 10 10;; > let array1d = array2d.[0];; error FS0001: This expression was expected to have type 'a [] but here has type int [,]

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• moving raid 10 to another identical server both on Smart Array 6i controllers

  - by SalimQrdl

  I have dead HP DL 380G4 with RAID 1+0 with 1 logical volume from 4x72GB drives on built-in Smart Array 6i 128Mb BBWC. It was shut down properly. It seems it was usual death for Proliant with ILO led 2,3,8 lighting. I want to move array to another identical server with same raid firmware level. What is the best strategy?: I have RAID 1+0 on bay 0 bay 1 bay 2 bay 3 As I understand bay0+bay1 are in RAID 1 , bay2+bay3 are in RAID 1, and both RAID 1 pairs are in RAID 0. So should I : Clear RAID config on new server, insert bay 0, bay 2 and power-on or Create RAID 1+0 with 1 logical volume from clear HDDs , and then poweroff ,remove HDDs and insert 2 HDDs(bay 0, bay 2) from old RAID 1+0. then power-on. (each hdd has its raid position info stored but may be could work on same config) According to documentation for Smart Array 6i it could be possible to migrate. however one requirement point is unclear for me Before you move drives, the following conditions must be met: • The array is in its original configuration. " What is orginal and non-original config for RAID 1+0? Another point "If you want to move an array to another controller, you must also consider the following additional limitations: • All drives in the array must be moved at the same time." I want to move one hdd from each RAID 1 pair. to have mirrors untouched just in case. Do they mean to move all 4 simultaniously? Smart Array 6i User Guide: Moving Drives and Arrays You can move drives to other ID positionson the same array controller. You can also move a complete arrayfrom one controller to another, even if the controllers are on different servers. Before you move drives, the following conditions must be met: • If moving thedrives to a different server, the new server must have enough empty bays to accommodate all the drives simultaneously. • The move will not result in more than 14 physical drives per controller channel. • No controller will be configured with more than 32 logical volumes. • The array has no failed or missing drives. • The array is in its original configuration. • The controller is not reading from or writing to any of the spare drives in the array. • The controller is not running capacity expansion, capacity extension, or RAID or stripe size migration. • The controller is using the latestfirmware version (recommended). If you want to move an array to another controller, you must also consider the following additional limitations: • All drives in the array must be moved at the same time. • In most cases, a moved array (and the logical drives that it contains) can still undergo arraycapacity expansion, logical drive capacity extension, or migration of RAID level orstripe size. When all the conditions have been met: Back up all data before removing any drives or changing configuration. This step is requiredif you are moving data-containing drives from a controller that does not have a battery-backed cache. Power down the system. If you are moving an array from a controller that contains a RAID ADG logical volume to a controller that does not support RAID ADG: Move the drives. Power up the system. If a 1724 POST message is displayed, drive positions were changed successfully and the configuration was updated. If a 1785 (NotConfigured)POST message is displayed: a. Power down the system immediately to prevent data loss. b. Return the drives to their original locations. c. Restore the data from backup, if necessary. Check the new drive configuration byrunning ORCA or ACU ("Configuring an Array" on page 9).

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• C function const multidimensional-array argument strange warning

  - by rogi

  Ehllo, I'm getting some strange warning about this code: typedef double mat4[4][4]; void mprod4(mat4 r, const mat4 a, const mat4 b) { /* yes, function is empty */ } int main() { mat4 mr, ma, mb; mprod4(mr, ma, mb); } gcc output as follows: $ gcc -o test test.c test.c: In function 'main': test.c:13: warning: passing argument 2 of 'mprod4' from incompatible pointer type test.c:4: note: expected 'const double (*)[4]' but argument is of type 'double (*)[4]' test.c:13: warning: passing argument 3 of 'mprod4' from incompatible pointer type test.c:4: note: expected 'const double ()[4]' but argument is of type 'double ()[4]' defining the function as: void mprod4(mat4 r, mat4 a, mat4 b) { } OR defining matrices at main as: mat4 mr; const mat4 ma; const mat4 mb; OR calling teh function in main as: mprod4(mr, (const double(*)[4])ma, (const double(*)[4])mb); OR even defining mat4 as: typedef double mat4[16]; make teh warning go away. Wat is happening here? Am I doing something invalid? gcc version is 4.4.3 if relevant. Thanks for your attention.

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